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AsymmetricAlgorithm.ImportSubjectPublicKeyInfo Method

Definition

When overriden in a derived class, imports the public key from an X.509 SubjectPublicKeyInfo structure after decryption, replacing the keys for this object.

public:
 virtual void ImportSubjectPublicKeyInfo(ReadOnlySpan<System::Byte> source, [Runtime::InteropServices::Out] int % bytesRead);
public virtual void ImportSubjectPublicKeyInfo (ReadOnlySpan<byte> source, out int bytesRead);
abstract member ImportSubjectPublicKeyInfo : ReadOnlySpan<byte> * int -> unit
override this.ImportSubjectPublicKeyInfo : ReadOnlySpan<byte> * int -> unit
Public Overridable Sub ImportSubjectPublicKeyInfo (source As ReadOnlySpan(Of Byte), ByRef bytesRead As Integer)

Parameters

source
ReadOnlySpan<Byte>

The bytes of an X.509 SubjectPublicKeyInfo structure in the ASN.1-DER encoding.

bytesRead
Int32

When this method returns, contains a value that indicates the number of bytes read from source. This parameter is treated as uninitialized.

Exceptions

The contents of source do not represent an ASN.1-DER-encoded X.509 SubjectPublicKeyInfo structure.

-or-

The contents of source indicate the key is for an algorithm other than the algorithm represented by this instance.

-or-

The contents of source represent the key in a format that is not supported.

-or-

The algorithm-specific key import failed.

A derived type has not overriden this member.

Remarks

This method only supports the binary (DER) encoding of SubjectPublicKeyInfo. If the value is Base64-encoded or in the PEM text format, the caller must Base64-decode the contents before calling this method.

Because algorithm-specific support is required to interpret the contents of this data format, ImportSubjectPublicKeyInfo throws a NotImplementedException by default.

Applies to